When the Grateful Dead rolled through Austin in November 1972, Eddie Wilson opened the Armadillo early on Thanksgiving for a surprise jam with Doug Sahm leading Jerry Garcia, Phil Lesh, Leon Russell, and a cast of Austin players. As Wilson’s Threadgill’s prepares its final plates, local slingers including Billy Broome, Carolyn Wonderland, Warren Hood, Cleve and Sweet Mary Hattersley, etc., re-create that magic holiday.